I’ve been wondering the same. I think of inducing heat/cold similar to turning a rusty spigot. The first few turns are difficult but the more you do it the easi

I’ve been wondering the same. I think of inducing heat/cold similar to turning a rusty spigot. The first few turns are difficult but the more you do it the easier it gets. But do spigots in other parts of your body get turned that are also rusty, so to speak? I notice cold/hot showers help my body regulate my temperature better, generally.